Folding auxiliary tray provided seat



22, 1952 A. z. BOYAJIAN 2,604,143

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheetl INVENTOR. ("freed Boya/z'an ATTORNE).

y 22, 1952 A. z. BOYAJIAN 2,604,143

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheet2 IN V EN TOR.

04/r'ed Boya/z'an BY A TTORNE Y.

July 22, 1952 A. z. BOYAJIAN $604,

FOLDING AUXILIARY TRAY PROVIDED SEAT Filed Sept. 17, 1949 4 Sheets-Sheet5 2e 2g r 37 25 f8 r r I L23 (63 iv 90( 5 INVEN TOR.

Ql/red Boyer/Ian A TTORNEYQ A. Z. BOYAJIAN FOLDING AUXILIARY TRAYPROVIDED SEAT Jul 22, 1952 4 Sheds-Sheet 4 Filed Sept. 17, 1949 of theoccupant.

, j ustecl position Patented July 22, 1952 v s TA'r%Es PATEN FOLDINGAUXILIARY TRAY PROVIDED sEA r Alfred Z. Boyajian, Farmingdale, N. Y.Application September 17, 1949, Serial No. 116,336

The ,present invention may be said to reside in a seat structure,embodying allofj the functional features and characteristics of a highchair, to be removably and temporarily, associatedfand employed inconjunction With a full size, con'- ventional chair whereby an'auxiliaryseat is provided thereon particularly adapted for useby infants orchildren. Thus thisfauxiliary seat readily and easily enables. theconversion of a full size or standard chair into ahigh chair, having allof the usual and customary appurtenances of sucha chair, and permitsofits reconversion to its original condition for normal or adult usewithout change in, or damage to, any of the parts or components thereof.

Among its other objects, the instant invention contemplates an auxiliaryseat that may be collapsed or folded compactly into relatively smallspace for storage or transportation when not in useandthe mere extensionof, which for use'wlll automatically position andcorrelate all of itsseveral elements orcornponents for immediate association with a standardchair.

' Another feature of. the subject seat'is its adaptation and adjustmentto the child or infant occupying it thereby imparting flexibility in itsuse to the structure and improving the comfort Moreover this adaptationand adju-stmentof the seat .tendsjt-o hold the 00,011-

pant in place therein and reduces the hazardsattendant on the useflofthe inflexible, nonrad- ,;i ustable high chair heretoforejgenerallyused.

' With the above and other objects, in View, as

will be apparent, this invention consistsin the construction,combination and arrangement" of; partsflall'as,hereinafter more fullydescribed,

claimed and illustrated .d'r'awings'whereinf in the accompanying Fig, )1is a front elevation of 'anf'auxiliary seat con'struct'edinaccordancewith the present in ventionshowing it extended for use inconjunctio'nwith a standard chair;

I Fig". 2-is a side elevation "thereofshowing it extended and mounted ona standard chair of the type commonly used in diningroom or kitchen, thechair being shown in,,broken.1ines. and an Iadjustment of the tray withreference to the back of theauxiliary seat being also illustratedinbrjoken or phantom lines;

' Fig.3 is a plan view of the present auxiliary seat illustrating thetray thereof adjusted tothe positionishown in ,phantom'lines in Fig.2;

Fig. l is a side elevation .of the auxiliaryseat r nyeonapsed or foldedfor. storage or transportation and shows. it extended in phantom lines;V I

Fig. 5. is a bottom view of one of'the adjustable 'armswhich carrythetray showing themeanslby which the arm may-be locked in a selectedadseat for the chair.

15 Claims. (01. 155--127) of furniture, fixed and unalterableiii' theirconstruction and very limited injuse; For example the'infantrapidlyoutgrows the high-chair, or quicklybecomes conscious ofits'difference from the chairs used by adults vandresents it. :In

either event the use of 'astandard or adult chair is almost mandatory,and entails makeshift ex- .Dedients to adapt it to the child. "The bestthat can be saidfor such adaptations isthat they raise the elevation'ofthe child from the sieat of the chair but, like the high chairy fno'adjustment to the child'is possible nor s any rovision made to hold theinfantorchild place. 'Moreover, the*1high"chair is comparativelyexpensive and comprises an extra article of furniture more or lessunsightly and used only on occasion.

, The present invention'overcomes all of these manifest obj ections andinadequacies of the highchair and of the expediently adapted standardchair by providing an auxiliary seat having a back by which thisseatmay'be removably suspended fromthe back or a chairsoas' to be po-Tsitioned above and pproximately parallel to-the A' tray is associatedwith the jal'lxiliary seat and is capable-'of' bodily'adjustmentftowardand away from saidbacki *All of the components are. so arrangedand'associated that they maybe folded one aboveithe other to an overallthickness not materially greater than the. combined thickness of theseat, tray and back and with, a superficialarea approximating that ofthe seat alone; Thus the present auxiliary seat maybe storedinj verylittle space or-rnay be easily transported. I, v v

. Referring to the drawings, the numeral l 0 designates the seat of thecollapsible; auiiiliary ch'air of the presentinvention. This seat is arelativelyflat', rigid member made of any suitable-material, preferablywood. The width and front'to rear depth'pf this seat, are preferablysomewhat less than'jthe corresponding dimensions of seat ll (Fig'fZ) of;the conventional or ordinary [chair I I with which'fthe device of the,present invention is associated so thatwhen 'thefseatfll is inoperativeposition above andpar lcl tO'thB seat. l-l 'oi thelordinary chair, the.marginal portion of the. seat He may be used'as afoot'restbytheoccupa'nt of the auxiliary seat l0. A, rigid L-shaped bracket;comprising" ahorizontalleg 'l 2 and anv upright substantially vertical"leg". I 4, is

; from of a all 3 secured to each of the respective side edges of theseat It) adjacent to the rear edge of the seat. The horizontal legmembers I2 are secured to the edges of the seat II) by means of screwsI3 or equivalent fastening means. The upright legs I4 of the bracketsproject up above the upper surface of the seat to a distance exceedingthe thickness of the tray, hereafter to be described. The lower part ofthe chair back I5 '(whichis preferably a unitary piece of wood) isinterposed between the upstanding bracket members I4 and is pivotallyconnected to the brackets by pivot" members I6. The aligned pivotal axesof the of the seat ID that when the back is folded down to horizontalposition substantially parallel with the seat, it is spaced above theupper surface of the seat a distance sufficient to permit the tray(hereafter described) to be interposed between the'back and seat. I

A rigid, elongate metallic guide member I1 is secured to each of thelateral edges of the back I5, these guide members I1 extending from apoint near the'top of the back down to' a point approximately midway theheight of the back. Throughout the major;portion of its length each ofthese guide members 'I1 comprises a part which is spaced from'theadjacent edge of the back (Fig.1) and which is provided with an elongateguide slot I8 (Fig. 2). At each of its opposite ends the 'guidevmemberI1 has a flat attaching portion which engages the edge of the back I5and. which receives a fastener member I9, for

example a screw, whereby the guide member is rigidly secured to'theback.

I The upper extremity .of each guide member is shaped to provide avertically elongate socket ,(Fig. 8) designed to receive'the shankportion 2 I- of a suspension hook 2|, the shank portion having a head atits lower end which is received in an enlargement of the lower. part ofthe socket whereby the hook is prevented from escaping the socket. LEachhook preferably consists 1 length of stiff steel rod-stock, the straightshankfportion being arranged within thesocket ,20 as above describedandthe. upper portion'bf the rod being bent twice, at right angles, to.form a hook of such dimensions that it may be hooked ever the upper edgeof the back II of a conventionabcha'ir, thereby'to suspend the auxiliarychairof [the present invention inoperative position, as shown in Fig. 2.Preferablythehook portion2l which engages the back 'of thechair ispadded, for example, by slipping a length of rubber tubing over the rodwhich'forms the (hook.

"'A rigid tray 22, oflanysuitable mateiial' and construction, forexamplefwood, is'fadjustably associated with the seat and back.Desirably this tray is of somewhat less front to rear width" thantheseat, but, as hereillustrated', it is of a transverse-width somewhatgre'ater'than that of the back, thereby providing for the convenientattachment of the arms as hereafter described.

The' t'ray is'so connected to the seat that in relative'positions of theseat and tray they are disposed in substantially parallel planesg Aprel'ferred'means for so connecting the tray and seat isby the use of apair of substantially U-shaped members, preferably madejof stiif steelrod-stock, each, of these U-shaped members having a' base portion 233(Fig. l) which is straight and'which isdisposed against the undersurface of the'tray (parallel tothe front. edge of the latter) andpivotally connected to the tray by meansofj bearing brackets 234 rigidlysecured to the underside of parts I6 are so spaced above the uppersurface 4 the tray. At each end of each base member 233 the rod materialis bent at substantially right angles to form the parallel legs 23 ofthe U -shaped member. The free ends of these legs 23 are again bent, atright angles, to provide pintle elements having their axes aligned, andthese inwardly directed pintle elements 235 are received in alignedsocket openings in the opposite edges, respectively, of the seat member.The pairs of socket openings which thus receive the inwardly directedpintle portions of the two U-shaped members are spaced aparthorizontally, as indicated at 236 and 231 (Fig. 2) while the bearingbrackets 234 which receive the respective base portions of the twoU-shaped members are spaced by the same distance from front to rear onthe underside of the 'tray 22. With this arrangement the two legs 23motion without possibility of cocking or binding.

'At each side of the auxiliary chair the tray is connected to the backby an arm of variable length. Preferably each arm comprises a hollow,

rigid sleeve member 24, for example of sheet steel,

here shown as substantially rectangular in vertical, transverse section(Fig. 6), and having a longitudinally extending slot 25 in its underface.

At its rear end, each of these sleeve members is provided with aninwardly directed horizontal pivot pin 26 (Fig. 5) having a head whichis located between the slotted portion of the guide I1 and the edge ofthe back, the shank of the pin sliding in the slot I8. Each arm alsocomprises a bar 21 (Fig. 6) which may, for example, be of wood, which isslidable telescopically within the corresponding sleeve member 24, andwhich is hinged at its forward end at 28 to the rear edge of the tray.The width of the tray exceeds that of the back sufficiently to permitthe forward ends of bars 21 to be hinged directly to the rear edge ofthe tray. Thus,'when the chair is folded, the arms may lie in the planeof the back at opposite edges of the latter. This slidingconnectionbetween the sleeve 24 and the bar 21 per-.

mits the tray to be moved bodily from front to rear relatively, to theback. In order to hold the tray in adjusted position, provision is madefor locking the bar 21 at any of a series of predetermined positionsrelative to the sleeve 24. As shown in Fig. '1, the bar 21 is providedwith a central, longitudinal groove 32 in its underside which is alignedor registered with the slot 25 in the underside of the sleeve 24. Alatch bar 29 (Figs. 5 and 7) is arranged within the groove 32 of the bar21 and is pivotally connected to the bar 21 by a horizontal pin 30 (Fig.5) adjacent to th forward end of the bar 21. This latch bar 29 ispreferably of stiff sheet metal of a vertical depth such that its loweredge normally projects down urges the forward end of the latch bar 29downwardly, the forward end ofthe latch baradjacent to the springconstituting a fingerpiece'to which upwa'rd pressure'may be applied forswinging the latch bar so as to move its rear end downwardly. Borderingthe slot 25, the sleeve 24 is provided with a s'eriesof spacednotches,or'recesses 35 (Fig. Sidesigned for selective engage;- merit by'the'lockingitooth 3|. In any selected adjusted position of the bar 21,relative to the sleeve 24, the chamber 36 of the bar'approximatelyregisters with one or another of the recesses'or notches 35; andth'tooth 3| is engaged within saidwnotch or recess. The latch ba'r'29 movesbodily with the bar 21 when the latter; is adjusted relatively to thesleeve 24, but such movement is only possible when the forward end ofthe bar 29 has been moved upwardly in opposition to the spring 33sufficiently to, disengage th tooth 3| from'the retaining notch orrecess 35. When the teeth of the two latch bars have been disengagedfrom the recesses 35, the bars 21 may be moved forwardly or rearwardlywithin the sleeves, thus bodily moving the tray from front to rear..When properly adjusted, release of the latch bars permits their teethto enterre- 'cesses 35, thus rigidly holding the arms at adjusted lengthand retaining the tray with its rear edge at the desired distance from.theforward face of the back.

o prevent the bar. 21 from being withdrawn completely from the sleeve 24and to arrest and limit its forward movement, a stop '34 (Fig.5) isprovided, projecting downwardly fromthe recessed portion of the. sleeve24, this stopbeing contacted by the tooth 3| when the tooth is inposition to be received by the foremost recess 35.

Whether or not the tooth actually enters said recess, the tooth willengage the stop 34, thus preventing over-travel of the bar 27 in aforward direction. I

As illustrated, a locking toggle may be -,arranged at each side of thechair structure. Each toggle comprises a link 31 pivoted to one sideedge of the seat I0, and a cooperating link 38 pivoted to the edge ofthe back, preferably at the lowerend of the guide H. The toggle links 31and 38 are provided at their proximate ends with angular extensions 39which are pivotally connectedat 4i).v When the links 31 .and- 38 arealigned, the extensions 39'overlie one another, butwhen the chair iscollapsed (Fig. 4) the link 31 is parallel to the edge of the seat I!)While the link38 is parallel to the back I5 and the extensions 39 aresubstantially aligned with each other; spacing of the folded seat andback is such, by

However, as illustrated in Fig. 4, the

reason of the height of the bracket members l4, that there is ample roomfor the aligned extensions 39 and for thelocation of the tray betweenthe seatand back,

H, with the parts in the collapsed pos1t1on :shown in Fig. 4, it bedesiredto set the chair 1structure up in operative position, as shownin-Fig.- 2,;the user will firstgrasp the upper portion of -;the back andswing the latter to -the upright position. He then grasps the tray nearits opposite lateral edges and lifts the latter directly up. During .thefirst portion of this movement,

vthe pivot pins 25 at the rear ends of the sleeves -24 .move up alongtheslots 13 in the guides l1, this upward movement continuing until, asdiagrammatically illustrated in .Fig. 9, the inveluded angle A betweenthe upper surface of the tray "'22 and the arm '24 substantially equalsthe included angle-'Nbetween the forward face of the back and the arm24. Further upward movement of the tray. is accompanied by a downwardmovement of thepivot pins-zfiinthe slots vl8',-*this downward movementcontinuing until the pivot' pins have reached the-lower ends of theslots.

The slots are of suchlengthgthat when the pivot pins are in the lowerends of the slots, the arms are approximately horizontal.

Since the arms-swingabout the horizontalaxes of the hinges 28; theweightof the arm tends to hold the pivot pin'23 at the lower endof the slotSince collapse of the device, after it has once been set -up,-can onlytake-placeby upward movement of the pins in the slots 18, itis'manifest'that the parts aresubstantiallylocked in position when thepins are in the lower endsof the slots. -Rcarward movement of thetrayisdirectly opposed by the reaction of the pinfle against the rear wall-0fthe slot l8, and such slight component of upward force as there may be,due-to any slight upward inclination-of the arm,- is opposed by thefriction of the pin in the slot.

The toggle linkage, comprising the parts 31 and 38, locks'the chairagainst accidental .coliapsesince, in the set up condition oftheldevice. the pivotal axisat -40 lies slightly forward of a lineJoining the pivotal i connections between the remote ends of the links314and 38 with th'e:.-seat and back-,- respectively. "Although atoggleidevice has here been shown :by way of example as a" convenientmeans to hold the'seat and back in operative relation of use; it isobvious that-other and equivalent conventional locking meansrsuch as aset scre-wor latch, may be-employed; After the-chair has been set up,the tray may be moved from front to rear (after first idisengaging theteeth 3! from notches 35) so as to adjust the spacing between the backand the rear edgeof the tray to correspond to the size of thechild'occupying the chair; 1 w

While the device thus described is particularly intended as shown forsuspension from the backfof air-ordinary conventional chair, it ismanifest that it may be set down onto the chair seat if desired, orsuspended from some other sup- I portff For example, it may be suspendedfrom the back of-"the seat of a motor vehicle and, if intended for suchuse, it is manifest that the hooks 2! will be made of appropriate sizeto engagewa seat back of greater thickness-than that shown herein.

' One desirableembodiment of'th'e invention' has been shown by way ofexample'but it istobe understood that theinvention is broadly inclusiveof any and all modifications falling within the scope of the'appendedclaims.

What is claimed is: i 1. In combination, in a device of the'classdescribed, 'a'seat member, rigid brackets fixedly secured tolopposit'eside edges, respectively, of the seat member, each bracket comprisinga-portion projecting'upwardly above the upper surface of the seatda backinterposed between the upwardly projecting portions of the brackets andpivotally connected to said brackets to swing to'and from a positionsubstantially parallel to' an'd spaced from said seat member, a tray,parallel links interposed between each sideof the tray and thecorresponding side of the seat member'and pivoted at their endsrespectively to the trayfandseat member whereby the tray may moverelative to,

whilefbeing maintained parallel to,the seat member, and extensible armsinterposed between and hinged at theirrends respectively to the tray andto the back, the hinge axis at the rear end of each arm being slidableupwardly along the edge of. the

back-from normalposition to permit folding the zontal axis to and from aposition substantially parallel to and spaced from said seat member, a

tray, parallel links connecting the tray and the seat member whereby thetray may move toward and away from the seatmember and will always remainsubstantially parallel to the seat, extensible arms hinged at theirforward ends to the rear edge of the tray, and a sliding, pivotal connection between the rear end of each arm and the back, and releasablelocking means for holding the back and seat in the relative position ofuse.

3. In combination, ina device of the class described, a seat member, aback hinged to the seat member to swing to and from apositionsubstantially parallel to and spaced from said seal:

member, a tray, the pivotal axis" about which the back swings beinghorizontal and spaced above'the upper-surface of the seat a distancesuch that when the back is. folded down into parallel relation to theseat it is spaced above the upper surface of the seat a distancesuflicient to accommodate the tray between the back and seat, parallellinks connecting the tray and seat member whereby the tray may movetoward. and

away from the seat member and will always remain substantially parallelto the latter, arms connecting the tray and back, each arm comprisingtwo relatively telescopic members whereby the length of each arm may bevaried therebypermitting bodily adjustment of the tray from front torear, the forward member of each arm being hinged to the tray and therear end of each arm being provided witha pivot which connects it to theedge ,of'the back, the back being provided .with guide means for thepivots whereby the latter may move-up and down along the edges of theback.

4. The combination with a seat member, of brackets fixedly secured tothe seat member and having portions. which project above the uppersurface'of the seat member in alignment one with the other transverselyof the seat member, a back pivoted between the projecting portions ofsaid brackets to swing to and from a position where it is substantiallyperpendicular to the seat to a position where it is substantiallyparallel to but spaced from the seat member, releasable means forholding the back andseat in thenormal operative position of use, a tray,parallel links permanently connecting the seat and tray wherebythe traymay move toward and away from the seat member and the backand willalways remain substantially parallel to the seat member, arms comprisingtelescopic portions connecting the back and tray, said arms beingpivoted at opposite ends to the tray and back respectively, the axis ofthepivotal connection between the rear end of each arm and the backbeing slidable upwardly from normal position along the .edge

,ofthe back to permit folding the back downward- .ly,- the lengths ofIthearms varying as the positionof the tray is changed, relatively tothe back,

and means for locking'the telescopic portions of the respective arms mesage positiogn of adjus't mea 7 toward and away from theformer and tomaintain the tray'substantially parallel to the seat member during saidmovement, whereby the tray may be. positioned approximately flushagainst the seat'member between it and the back, variable length armsinterposed between and pivoted at their ends to the tray and backto'rest in the planeof the back when the latter rests parallel to theseat member, the axis of the pivotal connection between the rear end ofeach arm and the back being slidable upwardly from normalposition'alongthe edged the back to permit folding the back downwardly and a toggleinterposed between the back and the seat member with the pivot betweenits'arms off set laterally to permit one arm to rest in the plane of theback and the other arm to rest in-the plane of the seat member when theback and the seat member are parallel one to the other as aforesaid.

6. The combination with a seat member, of a 7 pair of aligned bracketsfixed to the seat and having portions which projectabovethe uppersurface thereof adjacent one of its edges, aback hinged' between theprojecting portions ofsaid brackets to swing from a substantiallyvertical position to-a position spaced from and substantially parallelto the seat member and vice versa,

'means for locking the back and seat in the relaside of the tray, asleeve slidingly pivoted to-each.

side of-the backto reciprocatingly receive the aligned bar therein, and'a'disengageable lock associated with each bar and sleeve 'toreleasablyand selectively secure'theb'ar to the sleeve.

-'7; -The combination with a seat membenof a "pair of brackets fixed tothe seat having portions which project above the upper surface thereof 1adjacent one of its edges, aback hinged between the projecting-portionsof said brackets to swing from a substantially vertical position to aposition spaced from and substantially'parallel to the seat member andvice versa, means for locking the back and seat in the relative,operative position of use, a tray, a pair of parallel links pivoted 'toand interposed between end portions of the seat member and tray tosupport the tray at all times parallel to the seat member and providefor its movement toward and away from the seat member, a bar hingedto'each side of the tray, a

- sleeve slidingly pivoted to each side of the back toreciprocatinglyreceive the aligned bar therein, a lock associated witheach bar and sleeve to releasably and selectively secure the bar againstreciprocating movement relative to the sleeve, and

a pair of toggle arms on each side of the assembly,

one pivoted to the seat member and the companion arm to the back, theadjoining end portions of said arms being angularly offset with theextremities of said offset portions being connected pivotally one to theother.

8. A collapsible chair comprising a seat, a back and a tray, hinge meansuniting the seat and back, releasable means operative to hold the seatin normal position substantially at right angles to the back, extensiblearms connecting the tray andback, each arm being hinged at its front endto the tray and being pivotally connected at its rear end to the back,the axis of the pivotal 'connection between the rear end of each arm andthe back being slidable upwardly from normal position along the edge ofthe back to permit folding the back downwardly, I connected to the seat,corresponding links of the respective pairs constituting the parallellegs of a rigid, unitary U-shaped piece, the bases of the two U-shapedpieces being spaced apart and parallel to the front edge of the seat,and means pivotally and permanently uniting each of said bases to thetray.

9. A collapsible chair comprising a seat, a back and a tray, meanspermanently connecting the tray to the back, said means comprisingextensible arms, each arm being hinged at its forward end to the trayand being pivotally connected at its rear end to the back, the axis ofthe pivotal connection between the rear end of each arm and the backbeing slidable upwardly from normal position along the edge of the backto permit folding the back downwardly, hinge means permanently unitingthe seat and back, parallel links pivotally connecting the seat andtray, and means rigidly connecting a link of one pair to thecorresponding link of the other pair whereby the connected links areconstrained to move in parallel planes, each link being so pivotallyunited to the tray as to rock about an axis parallel to the forward edgeof the seat. I

10. A collapsible chair comprising a seat, a back, a tray, meanspermanently connecting the tray to the back, said means comprisingextensible arms each hinged at its forward end to the tray and eachpivotally connected at its rear end to the back, the axis of the pivotalconnection between the rear end of each arm and the back being slidablelongitudinally of the edge of the back, hinge means uniting the seat andback, a pair of parallel links arranged at each side of the seat, meanspivotally and permanently connecting the upper end of each link to thetray, the

lower'ends f the links rocking about axes ex- 3-- tending transverselyof the seat, and means constraining corresponding links of therespective pairs to rock through the same arc.

11. A collapsible chair comprising a seat, a

back, a tray, parallel links connecting the tray and seat, hinge meansconnecting the back and seat, and telescopically extensible armsconnecting the tray to the back, the arms being hinged at their forwardends to the tray, pivot means connecting the rear end of each arm to theback, the axis of the pivotal connection between the rear end of eacharm and the back being slidable longitudinally of the edge of the back,the links supporting the tray for movement from front to rear.

12. A collapsible chair comprising a seat, a back, a tray, parallellinks connecting the tray and seat, and hinge means connecting the backparallel links pivotallyand seat, releasable means operative to hold theseat substantially at right angles to the back, said links supportingthe tray for movement from front to rear, a pair of hollow arms, eacharm being hinged at its rear end to the back,-the hinge axis at the rearend of each arm being slidable longitudinally of the edge of the back, abar slidable within each hollow arm, hinge means connecting the forwardend of each bar to the tray, and latch means for holding each bar inselected position of adjustment within its respective hollow arm.

13. A collapsible chair comprising a seat, a back, a tray, hinge meansconnecting the back and seat releasable means operative to hold the seatsubstantially at right angles to the back, parallel links supporting thetray so that the latter is capable of movement from front to rear whilealways remaining parallel to the chair bottom, a pair of telescopicallyextensible arms, each arm being hinged at its forward end to the trayand at its rear end to the back, the hinge axis of the rear end of eacharm being slidable longitudinally of the edge of the back, the traybeing movable bodily from front to rear relatively to the back withoutdisconnecting the tray from the arms.

14. A collapsible chair comprising a seat, a back and a tray, hingemeans connecting the back and seat releasable means operative to holdthe seat substantially at right angles to the back,

arms hinged to the rear edge of the tray, pivot means connecting therear ends of the arms to the seat back, the pivot means being slidablelongitudinally of the back, the seat and tray normally being paralleland spaced apart and substantially perpendicular to the back, andparallel links connecting the seat and tray, whereby the tray is movabledownwardly from its normal position to a position where it is close toand parallel with the seat, and the back being movable to a positionclosely parallel to and above the tray.

15. A collapsible chair comprising a seat, a back and a tray, hingemeans uniting the seat and back, releasable means operative to hold theseat substantially at right angles to the back, parallel linksconnecting the seat and tray and constraining the tray to remainparallel to the seat at all times, arms hinged at their forward ends tothe rear edge of the tray, the rear ends of the arms having studs whichslide in elongate slots at the opposite edges of the back, said studsnormally being positioned adjacent to the lower ends of said slots, thechair being collapsible by moving the studs upwardly along the slotsuntil the angle between the arms and trayis substantially equal to theangle between the arms and back, and then moving the studs downwardlyuntil the back is substantially parallel to the seat and tray.

ALFRED z. BOYAJIAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 540,034 Swan May 28, 1895 540,384Hall June 4, 1895 796,276 Wolff Aug. 1, 1905 1,431,291 Davis Oct. 10,1922 1,688,225 Beloblavek Oct. 16, 1928 2,317,894 Doty Apr. 27, 1943

